HZ2U4QEVVYICB2SZOY4UW7WPLUCQUJA7GB3GXCMLVWEF2WGI32XAC
TH674WKJECNZ4K22DZ2N4SF53UGKG2BQRGBSNESRPDRSRND6TZHAC
SHYRGAWZFYGRWCRB54TYL2GTU3B4WMQ3J5H4ZHGV27W7PUQN3EWQC
BKOIYITRBRVU4D7XFAZPV5QHAPCBMIO3SBNHYJ6TVT43WR32CTHQC
$diff .= `(cd $clonePath ; hg log -r $rev1 -r $rev2 -b $branch)`;
$diff .= `(cd $clonePath ; hg log -r $rev1 -r $rev2)`;